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lost_it said:
there is an initial boost (overboost) if you floor it, I think it can hit something like 2.1 bar then settle down to around 1.3 ~ 1.4 bar.
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2.1 bar...no way!...unless you are refering to absolute pressure not gauge pressure.
From what I remember my standard boost was about 1.1 bar boost (gauge) so this maybe where you are getting the 2.1 figure from.
I've blown IC hoses off at 1.8 bar gauge (2.8 bar absolute)...there's no way 2.1 is used as an overboost.
I can run at 1.85 bar G peak...dropping back to 1.35 G sustained. I have tried many things to get more than 1.35 bar sustained boost at the rev limiter, but the K04 just can't move enough air to keep over 1.3 bar G of pressure at 6000 RPM.
On my S3 1.85 bar G peak boost equates to 330+ lb-ft of torque...2.1 bar would be incredible.